Method for preparing peeled layered material/ carbon nano tube complex in aqueous solution

A technology of carbon nanotubes and layered materials, applied in the field of preparation of layered materials/carbon nanotube composite materials, can solve the problems of large environmental pollution, a large amount of toxic solvents, and aggravated particle agglomeration, and achieve good stability and non-toxicity Solvents, to avoid the effect of destruction

Inactive Publication Date: 2012-06-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present inventors discovered this new way to make plastic materials more durable without losing their ability to resist chemical agents like oxygen gasoline (OG). They found that adding certain substances into these composites made them stronger than regular ones while maintaining excellent performance. These modifications resulted from modifying the surface characteristics of the material itself rather than just making everything bigger.

Problems solved by technology

Technological Problem: Excelling the technical problem addressed in this patents relating to improving the stability and dispersion characteristics of LDOX particles while maintaining good physical strength and flexibility in use across different industries like electronics industry, materials science, energy storage devices, environmental protection technology, sensors, electronic displays, biomedical engineering, fuel cells, dye synthesis, and others.

Method used

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  • Method for preparing peeled layered material/ carbon nano tube complex in aqueous solution
  • Method for preparing peeled layered material/ carbon nano tube complex in aqueous solution
  • Method for preparing peeled layered material/ carbon nano tube complex in aqueous solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 0.87g cobalt nitrate, 0.56g aluminum nitrate, 0.63g urea and 0.1g multi-wall carbon nanotubes were dissolved in 300ml deionized water to obtain a reaction solution, wherein the concentrations of cobalt nitrate, aluminum nitrate, urea and multi-wall carbon nanotubes were respectively Controlled at 10mmol / L, 5mmol / L, 33mmol / L and 0.3mg / ml. The above reaction solution was added into a three-necked flask, stirred at 70° C. for 6 h, filtered with suction and dried at room temperature for 3 h to obtain an unexfoliated LDH / CNT complex.

[0039] Add 1 g of the above product into 500 ml of a mixed aqueous solution of nitric acid and sodium nitrate, control the concentration of nitric acid to 1 mmol / L, and the concentration of sodium nitrate to 3.3 mol / L, stir for 24 hours, then suction filter and dry at room temperature for 5 hours to obtain the product Add it to an aqueous solution of sodium dodecylbenzenesulfonate with a concentration of 4 mmol / L, stir at 50° C. for 24 h, filt...

Embodiment 2

[0049] 2.38g of cobalt chloride, 0.665g of aluminum chloride, 0.63g of urea and 0.5g of multi-walled carbon nanotubes were dissolved in 300ml of deionized water to obtain a reaction solution, wherein cobalt chloride, aluminum chloride, urea and multi-walled carbon nanotubes The concentrations of the tubes were controlled at 10mmol / L, 5mmol / L, 33mmol / L and 1.5mg / ml respectively. The above reaction solution was added into a three-necked flask, stirred at 50° C. for 24 h, filtered with suction and dried at room temperature for 5 h to obtain a LDH / CNT complex.

[0050] Add 1 g of the above product into 500 ml of a mixed aqueous solution of nitric acid and sodium nitrate, control the concentration of nitric acid to 1 mmol / L, and the concentration of sodium nitrate to 3.3 mol / L, stir for 20 h, then suction filter and dry at room temperature for 5 h to obtain the product Add it to an aqueous solution of sodium dodecylbenzenesulfonate at a concentration of 10 mmol / L, stir at 60°C for ...

Embodiment 3

[0058] 16.86g of cobalt sulfate, 10.26g of aluminum sulfate, 1ml of ammonia and 1g of multi-walled carbon nanotubes were dissolved in 300ml of deionized water to obtain a reaction solution, wherein the concentrations of cobalt sulfate, aluminum sulfate, ammonia and of multi-walled carbon nanotubes were controlled at 60mmol / L, 30mmol / L, 200mmol / L and 3mg / ml. The above reaction solution was added into a three-necked flask, stirred at 100° C. for 12 h, filtered with suction and dried at room temperature for 8 h to obtain an unexfoliated LDH / CNT complex.

[0059] Add 1g of the above product into 500ml of mixed aqueous solution of nitric acid and sodium nitrate, control the concentration of nitric acid and sodium nitrate to 2mmol / L and 5mol / L respectively, stir for 18h, then filter with suction and dry at room temperature for 8h, after obtaining the product, add the concentration In 20mmol / L sodium dodecyl sulfate aqueous solution, stirred at 70°C for 8h, filtered with suction and ...

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Abstract

The invention discloses a method for preparing a peeled layered double hydroxides (LDH)/ carbon nano tube (CNT) composite material in an aqueous solution. The method comprises the following steps of: synthesizing LDH in an aqueous dispersion of CNT by a urea method or an aqueous ammonia method to obtain an unpeeled LDH/CNT complex, displacing interlayer carbonate ions of the LDH in the LDH/CNT complex into negative ions with weak laminar bonding force by treatment of an acid-salt mixed solution, introducing organic ions into the interlayer by ion exchange, and thus obtaining the peeled LDH/CNT complex, wherein the prepared complex shows the single-layer or several-layer peeling property of the LDH and reserves good dispersibility of the CNT. The method is simple, feasible and short in consumed time, does not need a toxic solvent, and is not required to be implemented at a high temperature, and is low in cost.

Description

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Claims

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Application Information

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Owner ZHEJIANG UNIV
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